Wind generators Vélter I and Vélter II
 
Wind generator Vélter I installed on a grid type tower
 

        Operation

        Soluciones Energéticas has designed and manufactures the Vélter I and Vélter II series wind generators to cover the energy demands of a medium house. They start power production at wind speeds of 3 m/s and self limit when the wind speed reaches 14 m/s. The nominal power is obtained at about 10 m/s. These wind generators have two mechanisms which serve to limit their rotational speed: the tail configuration causes it to fold up when the wind speed is higher than the limit speed, thereby positioning the plane of the blades parallel to the wind direction. Until that moment, the weight of the blades and their balancing mechanism cause the blade tilt angle to increase at high wind speed which means that the blade plane changes offering less wind resistance.

        In order to maximise the energy produced from the available wind it is necessary to install the wind generator on a tower at least six metres high; wind speed increases greatly with height. This tower should be anchored to the ground using a foundation block and a minimum of three guys at 120º. The wind generator is supplied dismounted in order to facilitate its installation on the tower.

        We manufacture these wind generators in 24V, 48V and high voltage versions (the latter being for electricity distribution to distant consumers). This last version needs a three phase transformer at the point of consumption.

 

Power vs. r.p.m. (Vélter I alternator)

        This graph shows that the alternator can produce more than twice the nominal power of the wind generator. Nevertheless, the power that can be obtained from the completed wind generator is limited by the high wind speed protection systems. The typical power graph of a wind generator can be seen below:

 

 Generated power vs. wind speed (Vélter II)
 
        The nominal power of the wind generator is reached at approximately 10 m/s. From that point on, the power increases to 130% of the nominal value, starting to stabilize when the blades balancing weights come into play, after this it decreases sharply when the tail bends.

        If you would like to know how our wind generators are manufactured click here.

 
Products page